Chain jack.



I. W. LlPPlNCOTT.-

CHAIN JACK.

APPLICATION FILED MAR. n. 1918* Patented May 7,1918.

UNET STATE JOHN W. LIPPINCOTT, O13 LITTLE ROCK, ARFANSAS, ASSIGNOR (3F ONE-HALF TO CARRIE A. LIPPINCOTT, 0F LITTLE ROCK, ARKANSAS.

CHAIN Application filed March 11,

To (ZZZ whom it may concern:

Pe it known that I. learn LIPPINCOTT, a citizen of the United States, residing at Little Rock. in the county of Pulaski and State of Arkansas, have invented a new and useful Chain Jack, of which the following is a specification.

My invention relates to jacks, and the object thereof is their adaptation to using an anchored chain for a purchase so that said jack may be utilized to compact matter that is between said jack and said chain anchorage, and I attain this object by the means illustrated in the accompanying drawings i n which l igure 1 illustrates a top sectional view Of a chain jack, a chain longitudinally positioned therein, and various other means adapting said jack to its purpose.

Fig. 2 illustrates a side sectional view of a part oi the outer tubular shell of a chain jack, and means useful in this part of said jack in adapting itto its purpose.

Fig. 3 illustrates a sidesectional view of a part of the tubular inner shell of said ack, and means useful in this part of said jack in adapting it to its purpose.

Fig. 4 illustrates an end view of either end of the jack.

Similar numerals refer to similar parts throughout the several drawings.

The jack is composed of a tubular outer shell 1 and a tubular inner shell 2 threaded internally and externally respectively to engage or be engaged by each other, and through which a. chain 3 may pass and be positioned th erein for engagement by a purchase pin 6 or 14 inserted through a purchase pin hole 13 in the square shoulder 4 and a link of said chain. Said shoulder is also provided with one or two actuating pin holes 5, and the said purchase pin 14 and an actuating pin 6 are chained to said shoulder. Either pin 6 or 14 may be used how-' ever as a purchase pin and at the same time to prevent the turning of that end of the jack through which it passes to engage the chain while the other end of said jack is being actuated by either or both of the pins 6 and 14, or said jack may be if desired actuated by a wrench. Said outer shell 1 and said inner shell 2 are each provided with said square shoulder 4 provided with the purchase pin hole and the actuating pin holes, and a head 7 is rotatably con- Specification of Letters Patent.

JACK.

Patented May 7, 1918.

1918. Serial No. 221,787.

nected to each of said square shoulders, and said heads are each provided with a retaining pin recess 8 to permit the passage therethrough of a retaining pin 9 to engage a link of the chain 3 which protrudes through a hole in the compacting, retaining, and stabilizing appliance 10, said chain being anchored to an anchorage 11.

The function of the purchase pin hole 1?? is to permit the passage therethrough of a purchase pin (either pin 6 or 14 may be used) to engage a link of the chain 8 to afford a purchase for the jack to push against in order to exert pressure in the opposite direction against the compacting and retaining appliance 10, and therefore conipact matter that is between said appliance and an end of a car or other chain anchorage.

The function of the retaining pin recess 8 is to permit the insertion of a retaining pin 9 between the jack and a retaining appliance 10 through and into engagement of a link of the chain 3 which protrudes through and from a hole in said appliance after said jack has been actuated and while said chain is tense and matter between said appliance and the chain anchorage is in a compacted condition for the retaining and stabilizing of said matter after said jack has been released.

The function 01 the actuating pin holes 5 in the square shoulder 4 is to permit the actuation of said jack by either or both of the pins 6 and 14, or as said shoulder is square a wrench may be used instead of either.

The object in providing the square shoulder 4, the interchangeable actuating and purchase pins 6 and 14, the actuating pin holes 5, the purchase pin hole 13, the rotatably connected head 7, and the retaining pin recess 8 therein in both outer and inner shell is to make said jack reversible, 2'. e. a purchase pin 6 or 14 may be placed in engagement of a chain 3 through the purchase pin hole 13 at either end of said jack and the opposite end of said jack actuated by a wrench or either or both of the pins 6 and 14 to tense the chain (an end of said chain being anchored) and exert a pressure on (or push against) matter between said jack and said chain anchorage.

In Fig. 1 th jack is shown with a chain 3 passing longitudinally therethrough and engaged thereby by the purchase pin 6 or 1% being passed through. the purchase pin hole 13 and a link of said chain, said engagement affording a purchase for said jack to push against when actuated as is indicated by the extension of said jack and the tensed chain, and therefore pressure is exerted against the compacting and retaining appliancelO, hence the matter between said appliance and the chain anchorage 11 is compacted, and said compacted condition may be retained by inserting a retaining pin 9 downward and through th retaining pin recess 8 and a link of said chain between the end of said jack and said appliance and which ust protrudes through and from a chain hole in said appliance and after which said jack may be released.

This jack is especially useful incombina- 4 tion with certain appliances adapted to compacting and stabilizing matter in freight cars and which are adapted to being engaged by chains longitudinally disposed ithin and anchored to each or either end of said cars, and said appliances being further adapted to being acted upon by said jacks for the purpose of compacting matter that was between said appliance and an end of said car or that was between two of said appliances, and to ailord an easy means for inserting a retaining pin into a link of said chain while the said matter is in a compacted condition in order to hold said appliance in position and therefore stabilize said matter while in transit.

Having thus described my invention what I claim and desire protected by Letters Patent of the United States is 1. The combination in a chain jack, of a Copies of this patent may be obtained'ior tubular outer shell internally threaded to engage or be engaged by an externally threaded tubular inner shell, both heads provided with means-to engage a chain longitudinally positioned therein, both heads provided with a multiplicity of actuating means, and a retaining pin recessed head rotatably connected to both of said shells.

'2. Thecombination in a chain jack, of a tubular outer shell intern ally.threaded to engage or be engaged by an externally threaded inner shell, with an anchored chain longitudinally positioned therein and passing through a compacting and stabilizing appliance positionedbetween said jack and said anchorage, means affording said .jack a purchase ofl of said chain, means for actuating said jack to exert a push against said appliance and therefore compact matter between said appliance and said chain anchorage, a rotatable head connected to both of said shells and a recess therein permitting insertion of a retainingtpin through a'link of saidchain to engage said compacting appliance to retain said compacted condition.

3. The combination in a freight car equipped with chains anchored to either end thereof and longitudinally disposed therein to engagecompacting and stabilizing appliances, of jacks adapted to engage said chains and when actuated act upon said appliances to compact matter between said appliance and an end of said car, and a recess provided at each end ofsaid jack to afford easy insertion of a retaining pin through a link of said chain to retain and stabilize said matter while in transit.

JOHN W. LIPPINCOTT.

five cents each, by addressing the Commissioner ,of Patents.

Washington, Built 

